The phrase "on fleek" originated from African American Vernacular English (AAVE) and became popular on social media. It is used to describe something that is perfectly on point, flawless, or looking exceptionally good. Originally, it was used to describe well-groomed eyebrows that were perfectly shaped and neat.
When someone says "soul on fleek," it could be interpreted as a creative and playful way of expressing that their soul feels complete, harmonious, or in a state of spiritual alignment. It suggests that they are feeling good about themselves on a deeper level, and their inner self is in balance or thriving.
It's important to note that language and slang can evolve over time, and interpretations may vary based on cultural contexts and individual usage. As such, the phrase "soul on fleek" might be understood differently by different people.